baber/WOPTO huggingface dataset:
Patent GB-818233-A (GB)
Title: Improvements in and relating to multi-layer colour photographic material
Inventor: MEYER KURT
IPC: G03C7/30
Filed: 1955-11-17
Abstract: 818,233. Multilayer colour photographic materials. FILMFABRIK AGFA WOLFEN VEB. Nov. 17, 1955, No. 32984/55. Class 98(2) A gelatine layer containing a diffusionresistant coupler is interposed between two adjacent emulsion layers which also contain diffusion-resistant couplers, the coupler in the gelatine layer being such as to give, after exposure and procesing, a dye of the same or approximately the same tint as the dye formed in one of the emulsion layers. Two such gelatine layers may be so interposed, each having a coupler corresponding to that of the adjacent emulsion layer. Defects caused by wandering of developer oxidation products are thereby avoided. The gelatine layer may contain a more reactive coupler than that of its adjacent emulsion layer, and it may serve also as a filter layer. Three examples indicate the layer sequences, the first having four of the gelatine-coupler layers and the blue sensitive-emulsion layer uppermost, the second one of the gelatinecoupler layers and the blue sensitive layer lowermost, and the third also having one of the gelatine-coupler layers but the blue sensitive layer uppermost as in the first example, and having a specified cyanacetophenone derivative as coupler in the green sensitised layer, this being the only coupler quoted in the Specification.
Patent GB-1519305-A (GB)
Title: Gas-cooled nuclear reactor system
IPC: G21C13/02
Filed: 1975-08-07
Abstract: 1519305 Mounting heat exchangers GENERAL ATOMIC CO 7 Aug 1975 [9 Aug 1974] 33036/75 Heading G6C A heat-exchanger tube sheet 11 mounted in an aperture 12 penetrating a pressure vessel 13 is prevented from moving upwards towards the interior of the pressure vessel upon failure of the mounting arrangement by a restraining ring 15. The tube sheet 11 and restraining ring 15 are both supported from an extension 14 of the metal liner 29 in the aperture by independent tubular extensions 17, 39. Sealing rings 51, 53 prevent leakage between the two extensions.
Patent GB-1134590-A (GB)
Title: Ground leakage differential protective apparatus
IPC: H02H3/17
Filed: 1967-07-19
Abstract: 1,134,590. Protective arrangements. HARVEY HUBBELL Inc. 19 July, 1967 [14 April, 1967], No. 33108/67. Heading H2K. In an earth leakage protective arrangement having a differential transformer 20 with primary windings 22, 24 in series in the line and earthed neutral conductors 10, 12 to a load 18, an impedance 28 is connected in series in the neutral conductor to prevent incorrect operation due to an earth fault 36 on the neutral conductor. Such an earth fault would otherwise cause the short-circuiting of the primary winding 24 which would then act as a short-circuited secondary winding and prevent adequate power being supplied from the secondary winding 30 to the trip coil 32 of a circuit interrupter 26 should earth leakage occur, as at 34, from the line conductor. The impedance 28 may be resistive, capacitative or inductive. In the last case, it may be a transformer secondary winding wound so as to produce a potential opposing that across the secondary winding 24. The primary winding of the further transformer may be connected in series in the line conductor, Fig. 2 (not shown) or between the line and neutral conductors, Fig. 3 (not shown).
Patent GB-981099-A (GB)
Title: Electric motor control apparatus
IPC: B66C13/54
Filed: 1962-08-29
Abstract: 981,099. Controllers; control of D.C. motors. HARNISCHFEGER CORPORATION. Aug. 29, 1962 [Sept. 1, 1961], No. 33142/62. Headings H2B and H2J. Relates to the co-ordinated control of the absolute and relative speeds of two electric motors which drive the holding and closing lines of a travelling crane bucket. A control rod 14 is adapted for universal movement and has extension 94 engaging yokes 95, 96, which oscillate on transverse axes. Each yoke is geared to a signal generator 20 or 21 and has a slotted arcuate bridge portion in which a bearing disc of the extension 94 rides. Thus, movement of the control rod along one axis or the other will oscillate selectively one yoke but not the other. If the control rod has a component of motion along both axes, both yokes will be concurrently oscillated. The signal generators 20, 21 deliver variable A.C. depending upon the coupling between stator coils as modified in accordance with the position of a rotor. When the control rod is moved along a hoist axis in one direction, an increasing voltage is obtained from rectifier 67 connected to signal generator 20, this voltage being reversed by switch 69 when the rod is moved along the same axis in the opposite direction. Similarly, generator 21 is associated with rectifier 68 and reversing switch 70, and responds to movement of the control rod along an axis at right angles to the first. The holding line motor 30 and closing line motor 31 are supplied from generators 35, 36, whose fields 37, 38 are energized from amplifiers 39, 40. The signal from generator 20 is applied across resistors 41, 42 to control the absolute speeds of both motors. Resistors 46, 47 provide voltage feedback, whilst resistors 48, 49 afford current feedback to compensate for losses in the motor circuits. The generator 21 impresses a voltage on resistor 50 for controlling the relative speeds of the motors. Switch 51 is opened in certain positions of the control rod to introduce resistors 64, 65, which stabilize the loads on the two motors. In a further embodiment, the signal generator 21 affects only the motor 31. Specification 847,665 is referred to.
Patent GB-1162361-A (GB)
Title: Ventilation System for Roofs
Inventor: HITCHINS JOHN WARREN
IPC: E04D13/17
Filed: 1965-08-03
Abstract: 1,162,361. Ventilators. J. W. HITCHINS. 19 Oct., 1966 [3 Aug., 1965], No. 33157/65. Heading F4V. [Also in Division E1] A flat roof 1 has a light-weight concrete screed 2 and an impervious layer 3 of felt or asphalt, ducts 4 being formed in the screed to ventilate the roof, the ducts being connected at each end to ventilators 6. The ducts may be preformed tubes of a permeable material or they may be formed by casting the screed around, e.g., rods, which are later removed: alternatively, chases may be cut in the top of the screed, permeable tubes being cemented therein if required. The ventilators are arranged on the roofs with the openings, e.g. 11, therein pointing in differing directions, so that a greater pressure is built up in some ventilators than in others, causing a flow through the ducts. The ventilators may have adjustable cowls 12, and a lower peripheral flange 7 with pips 9 separating it from the screed 2. They may alternatively be in the form of rectangular boxes, closed at the top and with perforations in two adjacent sides. Such a ventilator may be formed from a lower part and an upper part with a lower castellated edge. The ventilators may be of metal, concrete, asbestos-cement or glassreinforced resin.
Patent GB-1374901-A (GB)
Title: Method of producing reinforced and/or coates sheet materials
IPC: D04H1/645
Filed: 1972-07-14
Abstract: 1374901 Impregnating with polymer suspensions ROHM GmbH 14 July 1972 [17 July 1971] 33160/72 Heading D1P [Also in Divisions B2 and C3] Reinforced and/or coated sheet materials which may be permeable to air and water, e.g. for making artificial leather are obtained by applying to the sheet material with an aqueous suspension of a bead-like suspension polymer derived from at least one ethylenically unsaturated monomer and having a glass transition temperature of less than 35‹C; and then drying the sheet material. The sheet material may be formed from a textile fabric, knitted fabric, non-woven fabric, leather, paper or inorganic fibres (e.g. glass fibres or rock wool), and may be treated with the aqueous suspension by such methods as brushing, immersion, impressing, e.g. with rollers, foaming, stencilling, padding or spraying. The suspension polymer may be formed from one or more monomers such as acrylate esters of C 1 -C 18  alcohols, methacrylate esters of C 4 -C 18  alcohols, butadiene, vinylidene chloride and vinyl esters. They may additionally include units of a "hard" monomer such as methyl or ethyl methacrylate, (meth)acrylonitrile, (meth)acrylamide or styrene. Other optional monomer components include ethylenically unsaturated mono- and di-carboxylic acids and cross-linking monomers such as the methylol or methylol ether derivatives of (meth)acrylamide and monomers with at least 2 ethylenic bonds. The polymers are obtained by polymerising the monomer or monomers in an aqueous medium in the presence of a suspension stabiliser or thickener such as gelatin, pectin, alginates, water-soluble starch, cellulose derivatives, synthetic watersoluble polymers, such as poly(meth)acrylic acid and alkali metal salts thereof and polyvinyl pyrrolidone, talc, magnesium carbonate or aluminium hydroxide, optionally together with an auxiliary stabiliser such as a watersoluble salt, e.g. NaCl. If necessary, the Tg of the polymer can be lowered by the use of a plasticiser, e.g. a phthalate plasticiser. In Examples sheets of the following materials are used: cotton fabric, non-woven fabric, (e.g. of polyester or polyacrylonitrile fibres), polypropylene and polyamide. In one Example the aqueous polymer suspension is combined with a dispersion of an acrylic resin (a butyl acrylate/methylol methacrylamide copolymer).
Patent GB-521494-A (GB)
Title: Improvements in machines for producing rubber sheet from coagulated latex
IPC: B29D23/24
Filed: 1938-11-15
Abstract: 521,494. Rubber machines. SHAW DAR, BY & CO., Ltd. (Huttenbachs, Ltd.) Nov. 15- 1938. No. 33196. [Classes 70 and 87 (ii)] Rollers in machines for sheeting coagulum are formed with ribs of arcuate cross-section extending from end to end of the roller. When a battery of rolls A, B, C, D, is employed, the radius of the ribs A<SP>1</SP>, B<SP>1</SP>,C<SP>1</SP>, preferably decreases from the entry to exit of the rubber, and the rollers D are marking or patterning rollers.
Patent GB-305754-A (GB)
Title: The manufacture of acenaphthene derivatives
IPC: C07C205/06
Filed: 1927-12-08
Abstract: 305,754. Morgan, G. T., and Harrison, H. A. Dec, 8, 1927. Nitro- and amino-acenaphthenes.-2-Nitroacenaphthene is obtained by nitrating acenaphthene under anhydrous conditions and separating the 2-nitroacenaphthene from the reaction mixture by physical methods. In an example, acenaphthene is nitrated in the cold with anhydrous diacetylorthonitric acid, obtained by adding concentrated nitric acid to acetic anhydride. The 2-nitroacenaphthene separates out from the reaction mixture, while the mother liquor, on diluting with water, deposits crude 4-nitroacenaphthene. 2-Aminoacenaphthene is obtained by reducing 2-nitroacenaphthene. In an example, sodium hydrosulphite is used for the reduction. The mixture of nitroacenaphthenes obtained in the ordinary nitration of acenaphthene contains a small proportion of the 2-nitro compound. On reducing this mixture, the 2-aminoacenaphthene may be separated from the 4- aminoacenaphthene. which is the chief product, by fractional crystallization from petroleum. The properties of the 2-aminoacenaphthene are described and compared with those of the 1-, 3- and 4-isomers.
Patent GB-466187-A (GB)
Title: Improvements in artificial dentures and in the method of manufacture thereof
IPC: A61C13/00
Filed: 1935-11-30
Abstract: 466,187. Artificial teeth. HOBDAY, W. W. Nov. 30, 1935, No. 33217. [Class 81 (ii)] Wings 3 for the front portions of dentures are formed with reinforcing plates 4, which have pegs 5 projecting from one surface and these plates are accurately positioned in the mould by embedding them in the wings of a waxed pattern built up on a model so that the pegs project through the wings of the pattern and then serve to locate the plates in a matrix during the moulding of the denture. The model and wings are set up in a " flasking " mould into which is poured plaster of Paris, after the setting of which the wax is melted leaving a mould into which vulcanite is packed. After vulcanization and removal of the mould the projecting ends of the pegs are cut off.
Patent GB-1353939-A (GB)
Title: Signal transmitting device for use in drilling wells
IPC: E21B47/18
Filed: 1971-07-15
Abstract: 1353939 Hydraulic control circuits SOC NATIONALE DES PETROLES D'AQUITAINE 15 July 1971 [16 July 1970] 33230/71 Heading F1P [Also in Divisions El and G3] Signals generated at the bottom of a drilling well and representing measurements taken thereat e.g. rock hardness, tool wear and deviation are transmitted to the well head by periodically closing a needle valve 16 Fig. 1 in the path of the downcoming drilling fluid; the valve 16 being mechanically connected by its stem 57 to the upper end of a double-acting hydraulic jack piston 56 Fig. 2 supplied with working fluid by a pump 25 driven by a drilling fluid operated turbine 4 and controlled by an electrically operated fluid distributing slide valve 50 having two windings 58 leading to a water tight enclosure 22 for converting into electrical signals the sensed data. The enclosure 22 is supplied with electrical power by an alternator 14 also driven by turbine 4. In operation the pump 25 draws fluid, e.g. oil, from a chamber 34 and delivers up a passage 32 provided with a relief valve 37, through a filter 40, a passage 44 to the distributor 50 and from thence down a return passage 46 and capacity chambers 47, 34 to the pump inlet.
Patent GB-1442509-A (GB)
Title: Engine exhaust gas recirculating system
IPC: F02M25/07
Filed: 1974-07-29
Abstract: 1442509 Fluid-pressure servomotor systems FORD MOTOR CO Ltd 29 July 1974 (24 Aug 1973] 33361/74 Heading G3P [Also in Division F1] Exhaust gas recirculation system provides exhaust gas recirculation only when the engine is accelerating. Exhaust gas is drawn from exhaust pipe 40 through passages 44, 46, 48 and 50 to inlet manifold 34, the flow being controlled by valvemember 56 actuated by diaphragm 66 and biased by spring 77 to the closed position. The vacuum, if any, existing at port 86 in carburetter 10 is transmitted by lines 88 and 74 to vacuum chamber 70, the lines being connected together by valve 84 which includes valve-members 98 and 100. In the position shown in the Figure, valve-member 98 is seated and valve-member 100 is in the open position, allowing line 74 to communicate with atmosphere through port 114. Valve-members 98 and 100 are mounted on valve spool 96 which is free to slide on spindle 102 between stops 104 and 106 and is biased by spring 108. Spindle 102 is attached to diaphragm 122, on one side of which is vacuum chamber 134 and on the other side of which is closed chamber 136. A check-valve 142 allows air to pass freely from chamber 136 to chamber 134 and a small orifice 140 allows flow in both directions. Operation. a) Throttle closed, engine idling. Inlet manifold vacuum is high and is communicated from port 80 to chamber 134. Check-valve 142 opens so that chamber 136 is also at lowpressure. Spring 132 acts to keep valve-member 98 seated. Atmospheric pressure prevails in vacuum chamber 70 so that valve-member 56 is seated and there is no exhaust gas recirculation. b) Light acceleration. If the manifold vacuum remains in excess of 7 ins Hg. spring 132 keeps valve-member 98 seated, c) Heavy acceleration. Absolute pressure in the manifold and chamber 134 increases and diaphragm 122 moves against spring 132, valve 98 is unseated, valve 100 is closed and the vacuum prevailing at port 86 is applied to diaphragm 66 to open valve 56 and allow exhaust gas recirculation. d) Cruising. With the throttle valves 26 open only a small amount, high vacuum in chamber 134 opens check-valve 142, so that there is no pressure across diaphragm 122 and valve-member 98 is seated. e) Full throttle. Rapid opening of the throttle valves causes exhaust gas recirculation to stop. If the throttles are held wide open, the absolute pressure in the manifold is high and no vacuum is available to open valve 56.
Patent GB-325241-A (GB)
Title: Improvements in dispatching systems for elevators, hoists and the like
IPC: B66B1/18
Filed: 1928-11-14
Abstract: 325,241. Associated Electrical Industries, Ltd., (Westinghouse Electric & Manufacturing Co.). Nov. 14, 1928. Drawings to Specification. Electric plant.-In a lift system comprising a number of cages operating between the same terminals each in its own shaft, and having means for transmitting despatching signals to the cages at predetermined intervals of time and means for rendering effective to receive a signal the devices pertaining to the first cage only to arrive at a terminal, the transmitting means comprises an electric contact make-and-break device arranged for continuous operation independently of the position of the cages and having associated therewith an electromagnetic relay device adapted to be operated in response to a signal which may be despatched during such time as no cage is present at the terminal and to be maintained so operated until the arrival of a cage at said terminal in order to effect the receipt of the signal by the receiving devices of the cage upon its arrival at the terminal. Additional electromagnetic relay devices are provided, one for each cage, each of which has in its energizing circuit contacts which are controlled by the relay devices corresponding to the other cages so that it is energized in response to the arrival at the terminal of the cage corresponding thereto provided no other cage is present at that terminal, and when energized actuates its associated contacts to complete one or more circuits for rendering the signal receiving devices corresponding to said cage effective to receive a signal. Means are provided for maintaining closed the doors of all cages except that of the first to arrive at a terminal until the first arriving cage has left the terminal.
Patent GB-1190898-A (GB)
Title: Thermostable Polymers Obtained from Phenols
Inventor: BALME MAURICE
IPC: C08G8/00
Filed: 1968-07-12
Abstract: 1,190,898. Laminates. RHONE-POULENC S.A. 12 July, 1968 [13 July, 1967], No. 33459/68. Heading B5N. [Also in Division C3] Laminates are prepared by treating fabric (e.g. glass fibre) with a solution of a polymer derived from a phenolic compound and a compound of formula (where R may be an azo or azoxy-radical) in, for example, dimethyl formamide, dimethyl sulphoxide, hexamethyl phosphotriamide, pyridine and N-methylpyrrolidine, evaporating the solvent and pressing several sheets of the fabric together to form a laminate.
Patent GB-633924-A (GB)
Title: Means for mounting or carrying articles on cards, boards and the like
IPC: B65D6/16
Filed: 1947-12-19
Abstract: 633,924. Packing by attaching to cards. MERCER, A. J. Dec. 19, 1947, No. 33570. [Class 94(i)] In a card for mounting small articles, having a number of slits cut therein each being of such shape that a tongue or flap may be pressed up from the card to allow of an endless elastic band being passed over it, the shape of each tongue includes divergent lines such as will prevent the band leaving the tongue without being substantially stretched by doing so. The tongue e is defined by a slit a which terminates in holes c, and has a recess f to facilitate the insertion of a fingertip. An endless band d is passed over the tongue so that it lies in the holes c, and an article b to be carded is passed through the projecting loop of the band. The article b maintains the tongue coplanar with the card thereby maintaining the band in position. The holes c may be dispensed with and/or the tongue may be formed with a neck to locate the band as shown in Fig. 5. In the form shown in Fig. 6 two tongues are defined by V-shaped slits h and slit g, and co-operate with respective bands; an opening i is provided for lifting the tongues.
Patent GB-193197-A (GB)
Title: Improvements in advertising screens
IPC: G09F11/26
Filed: 1921-12-14
Abstract: 193,197. Robertson, A. M. Dec. 14, 1921. Reel and endless-web apparatus; illumination, changing advertisements by controlling.-An advertising screen 1 comprises an endless band 2 bearing advertisements behind the displayed portion of which are located electric lamps 4 in compartments 5 of irregular shape. The lamps 4 are lit by contacts on a commutator in such a way that the screen is -illuminated gradually section by section till wholly visible, when the light is cut off and the band is moved by a motor 3 to display the next advertisement.
Patent GB-617778-A (GB)
Title: Process of manufacturing basic calcium chlorate and basic calcium chloride from solutions containing both calcium chlorate and chloride
IPC: C01F11/20
Filed: 1945-12-12
Abstract: Crystallised basic calcium chlorate (CA(ClO3)2: Ca(OH)2 is precipitated from solutions of calcium chlorate and chloride by adding 1 to 1.1 mol. of Ca(OH)2 per mol. of chlorate to the solution kept at 100 DEG  C. or below which has a total calcium chloride + chlorate concentration of 2.7-3.5 mols. per kg. of solution, and a mol ratio CaCl2 : Ca(ClO3)2 not exceeding 0.7, this maximum ratio corresponding to an optimum total calcium salt concentration of about 2.9 mols. per kilo of solution.  In a cyclic process a solution rich in chloride is treated above 105 DEG  C. with lime to precipitate basic calcium chloride, the filtrate concentrated and cooled to 100 DEG  C. or below, treated with lime as above to precipitate basic calcium chlorate, and the final filtrate used to suspend lime for the two precipitation states.  The basic C CaCl2.  Ca(OH)2 may be decomposed with water to yield calcium chloride and lime for re-use. The basic chlorate may be dried, and mixed with a small proportion of quicklime to prevent agglomeration and to react with chloride and chlorate from the mother liquor.  It may be used as weed killer or converted into pure chlorate by suspension in water and removal of precipitated lime.  Specifications 601,928 and 615,438 are referred to.
Patent GB-926330-A (GB)
Title: Improvements in or relating to bookbinding
IPC: B42B5/06
Filed: 1960-09-30
Abstract: 926,330. Bookbinding. F. K. ALTMAN. Sept. 30, 1960, No. 33683/60. Classes 16 and 146 (1). A method of binding books and brochures includes pressing a pre-shaped clip 12 on to the spine of the book to clamp the filler or book block 1 and covers 9, 9<SP>1</SP> together. The jaws 2 of a conveyer are provided with guide channels 6, 7, 8 to receive the covers 9, 9<SP>1</SP> and a filler 1 (or a stack of loose sheets), and convey the assembled book over a vibrating baseplate, whereby the filler and covers are squaredup. One jaw 10 of each pair of jaws 2 is resiliently mounted and is closed to grip the assembled book after squaring-up, under the action of a curved cam surface 11, and the book slid into a pre-stamped clip 12. On stopping the conveyer, pincers 13 or rollers compress the clip about the spine of the book. The book is then conveyed to the next station where the projecting ends 14 of the clip are folded over. The covers may be of flexible or rigid synthetic plastic material (e.g. PVC), treated with a softening agent along its fold lines to facilitate hinging movement of the covers, or of cardboard.
Patent GB-1150555-A (GB)
Title: Method of Filling a Cavity with a Foamed Material
Inventor: MOSSMAN JAMES EDWARD
IPC: B29C37/00
Filed: 1965-08-06
Abstract: 1,150,555. Thermal insulators; filling cavities. ENGLISH ELECTRIC CO. Ltd. 4 Aug., 1966 [6 Aug., 1965], No. 33782/65. Heading F2X. [Also in Division F4] Prior to filling a refrigerator door with foamed polyurethane, a vent pipe 7 having gas permeable but foam impermeable walls is located so as to extend to points where gas is likely to be trapped by advancing foam. A number of pipes leading to a common vent may be provided. The pipes are formed of woven glass fibre, and are bonded in place upon curing of the foam.